SPRINGFIELD – City police arrested four people Thursday in two separate raids of drug operations in the Memorial Square and Liberty Heights neighborhoods less than four hours apart.

In each instance, officers of the police Narcotics Division obtained district court search warrants following investigations that were triggered by complaints from neighborhood residents about open dealing and heavy traffic from customers, said Sgt. John Delaney, spokesman for Police Commissioner William J. Fitchet.

Arrested in a 6:10 p.m. raid at 468 Liberty St., near Gurdon Bill Park, were resident David Correa, 23 and Ruben Lopez, 23, of 116 Newland St.

Each was charged possession of marijuana with intent to distribute, two counts of distribution of marijuana and violation of a drug-free school zone.

During the raid, police seized several bags of marijuana packaged for street sales, and $774 in cash, Delaney said.

Before police moved in to serve the warrant, they watched two customers approach the house and buy drugs. Each customer was later stopped and issued a civil citation for marijuana possession of less than ounce, he said.